code: def remove_bpe(str_with_subword):
      if isinstance(str_with_subword, list):
          return [remove_bpe(ss) for ss in str_with_subword]
      symbol = "@@ "
      return str_with_subword.replace(symbol, "").strip()
  
file_path: graph4nlp/examples/pytorch/nmt/inference.py
imports: import os
  import resource
  import nltk
  import torch
  from graph4nlp.pytorch.data.dataset import Text2TextDataItem
  from graph4nlp.pytorch.inference_wrapper.generator_inference_wrapper import GeneratorInferenceWrapper
  from graph4nlp.pytorch.models.graph2seq import Graph2Seq
  from args import get_args
  from dataset import IWSLT14Dataset
label_desc: Use image node_id 1 for calling a global function with example usage: remove_bpe(str_with_subword) and returns: str_with_subword, unknown